22results about How to "Improve wear performance" patented technology

The invention discloses a preparation method of a basalt short fiber (BF) oriented reinforced rubber composite material. The method comprises the following steps: 1) pretreating BF; 2) proportionally weighing BF and other raw materials, and sequentially adding the BF and other raw materials into an internal mixer for mixing; and (3) after uniformly mixing, carrying out open milling and sheet discharging, and carrying out performance test after carrying out calendering orientation vulcanization on the obtained rubber material along the BF direction. The composite material comprises the following components in parts by mass: SCR5: 85; 15 parts of BR; 0.3 part of CTP (Cellulose Triphosphate); n234: 43; dZ: 1.8; bF: 3 is firstly treated; s: 1; and after the two-stage mixing, the rubber material is subjected to calendering orientation along the BF direction and is vulcanized along the orientation direction. The pre-treated BSF is treated by using a sodium stearate method, so that the physical and mechanical properties of the composite material are relatively good, the pre-treated BF after pretreatment is relatively high in lipophilicity and relatively good in compatibility with a rubber matrix, and the comprehensive performance of the modified BF after being matched with latex and the like is relatively high.

The application provides a laser impact combined surface modification method for a bearing raceway surface, a pre-processing raceway region and a retainer matching surface, the raceway region reserving a processing allowance layer; a constraint layer is applied to the raceway region; the raceway region is micro-scale laser impact strengthened for at least 3 times without an absorption protective layer, a deep and uniform plastic strengthening layer is formed; the processing allowance layer is removed; an absorption protective layer is attached to the retainer matching surface; and array-arranged oil storage pits are formed on the retainer matching surface through laser impact forming. The method can form a plastic strengthening layer on the raceway region surface through micro-scale laser impact strengthening, can significantly improve the rolling contact fatigue performance and wear performance of the bearing, and can form oil storage pits on the retainer matching surface through laser impact forming, the oil storage pits can lock lubricating oil through the surface tension of the oil, and the problem of insufficient lubrication of the bearing raceway surface is solved.

The invention relates to the technical field of tire manufacturing, in particular to a discontinuous winding belted layer structure, application of the discontinuous winding belted layer structure, an all-steel radial tire and a preparation method of the all-steel radial tire. The belted layer comprises a 1 # belted layer and a 2 # belted layer, the 1 # belted layer is attached to the tire body and is the innermost side in the radial direction, the 2 # belted layer is attached to the 1 # belted layer, the width of the 2 # belted layer is larger than that of the 1 # belted layer, and the belted layer further comprises two groups of discontinuous winding belted layers which are in bilateral symmetry along the center line of the tire tread and are arranged on the same layer surface; the winding belted layer is arranged on the shoulder part of the upper surface of the 2 # belted layer; and the winding belted layer is formed by winding nylon or a steel wire from the shoulder part to the middle part. According to the design of winding the belted layer, the circumferential hooping effect of the belted layer on the tire is increased, and compared with the design of full winding or increasing the belted layer, the cost is reduced, performance excess is avoided, and tire abrasion is improved.

The present invention discloses a magnetic rare earth friction material whose friction coefficient changes in the same direction as temperature, comprising the following components: 15-30% paramagnetic rare earth material, 15-25% fiber, 4-8% resin, 10-20% friction adjustment material, 8-15% graphite, and 20-30% filler; its preparation steps are: mixing, hot pressing, heat treatment, and size processing. The present invention adopts a paramagnetic rare earth material, and a combination of a fiber material, a high temperature resistant resin, a friction adjustment material, a lubricating material, and a filling material for pressing and forming; according to the principle that the magnetic susceptibility of the paramagnetic rare earth material is inversely proportional to the temperature, when the temperature of the paramagnetic rare earth material rises, the magnetic susceptibility decreases, the lubricity decreases, and the friction coefficient of the material increases, thereby achieving the change of the friction coefficient in the same direction as temperature; the overall performance of the friction material is adjusted by resin, friction adjustment material, graphite, and filler, so that it has good friction performance, mechanical performance, and physical performance, thereby ensuring the effectiveness, safety, and stability of the braking function.

Various embodiments disclosed relate to shaped abrasive particles having sharp tips, methods of making shaped abrasive particles, methods of grinding a substrate with shaped abrasive particles, and coated abrasive articles including shaped abrasive particles. The shaped abrasive particle includes a ceramic having a polygonal cross-sectional shape along a longitudinal axis of the shaped abrasive particle, and at least one tip of the shaped abrasive particle has a radius of curvature less than or equal to about 19.2 microns.

The utility model provides high-breathability waterproof Teflon cloth which comprises a Teflon cloth body, the front end of the Teflon cloth body is fixedly connected with a breathable waterproof layer, the breathable waterproof layer is made of aramid fiber materials, and the design solves the problems that in an original device, the Teflon cloth body is relatively soft, and under the condition of high stress or frequent friction, the Teflon cloth body is not prone to falling off. The teflon cloth body is worn or torn, the teflon cloth body can provide certain air permeability, but compared with natural fiber, the air permeability is still limited, a wearer may feel stuffy and moisture is not easy to discharge during high temperature or strenuous exercise, and the teflon cloth is reasonable in structure, good in practicability and convenient to use. When the Teflon cloth body is worn or torn, the breathable waterproof layer and the wear-resistant cloth can improve the pulling resistance and wear resistance of the tensile net, and the micropores in the surface of the tensile net can prevent liquid water from permeating, so that the Teflon cloth has a good breathable effect and also has a breathable effect.

The invention belongs to the technical field of battery foils, and particularly relates to an aluminum foil cutting method and a method for reducing radial chromatic aberration of an aluminum foil roll end face. The method comprises the steps that aluminum foil is conveyed to a cutter groove roller, and a rotating disc cutter cuts the aluminum foil; and lubricating liquid is sprayed to the surface of the disc cutter. The lubricating liquid is sprayed to the surface of the disc cutter when the aluminum foil is cut, lubrication is enhanced, the abrasion degree of the cutting edge is reduced, the abrasion difference between the cutting edge in the later stage and the cutting edge in the early stage is small, and therefore the whole cutting face of the obtained aluminum foil roll is smooth and low in roughness, looks bright after mirror reflection is generated, and no dark area exists.

The invention relates to the technical field of pavement material performance testing, in particular to an indoor asphalt pavement abrasion testing device which comprises a device shell, a rolling part, a testing part and an electric control part. A movable asphalt tank is arranged at the bottom in the device shell, and the rolling part and the testing part are both arranged in the device shell and are both located above the movable asphalt tank; one end of the rolling part and one end of the testing part are movably connected to the electric control part; when an asphalt pavement is paved, the electric control part controls one end of the rolling part to move, so that the other end of the rolling part moves to a notch of the movable asphalt groove and moves relative to an asphalt mixture placed in the movable asphalt groove; when the asphalt pavement is tested, the electric control part controls one end of the test part to move, so that the other end of the test part moves to a notch of the movable asphalt tank and moves relative to the to-be-tested asphalt pavement paved in the movable asphalt tank; the problem that a single device cannot complete the whole process of the asphalt pavement abrasion test indoors is solved.

The invention provides an alloy film layer and a preparation method and application thereof. The preparation method of the alloy film layer comprises the step of carrying out micro-arc oxidation on an alloy base material in electrolyte, wherein the electrolyte comprises electrolyte, a pH regulator, an additive and an activating agent. According to the preparation method, the micro-arc oxidation time is greatly shortened, the production efficiency is remarkably improved, the Vickers hardness of the prepared alloy film layer can reach 998-1092 HV, the capacity of resisting external force scratching and abrasion is high, and the excellent stable friction performance is achieved under the high-load and high-speed conditions.

The present utility model relates to the technical field of tires, and provides a tire with high wet grip performance throughout its life cycle, including: a carcass; the crown part of the carcass sequentially has an inner liner layer, a ply layer, a belt layer, a chafe layer, a second tread rubber, and a first tread rubber from bottom to top; multiple main drainage grooves are longitudinally distributed on the first tread rubber and the second tread rubber; multiple transverse grooves are provided on the first tread rubber and the second tread rubber. The present utility model adopts a double-tread rubber structure and a deep groove design for the main drainage grooves, which can improve the wear resistance and wet grip performance of the tires, achieve high wet grip performance and drainage efficiency throughout the life cycle, and extend the service life of the tires.

The invention discloses a carbon-ceramic brake disc and a preparation method thereof, and relates to the technical field of carbon-ceramic brake discs. Plain cloth is used for replacing non-woven cloth, the strength of a structural part is improved, on the other hand, a friction layer adopts a tire net, the defect that the non-woven cloth on a friction surface is prone to falling off is overcome, the fiber content of the tire net is greatly reduced, and the friction surface is protected. Hydroxyl magnesium silicate with excellent wear resistance is prepared, then hydroxyl magnesium silicate and porous molybdenum disulfide are compounded, and ferroferric oxide is loaded on a porous molybdenum disulfide-hydroxyl magnesium silicate compound by adding ferric trichloride and ferric chloride tetrahydrate, so that the wear resistance of the material is improved, and the wear resistance of the material is improved. And the strength and wear resistance of the carbon-ceramic brake disc are further improved.

The invention relates to a preparation method of a copper-doped DLC (diamond-like carbon) film based on magnetron sputtering, and belongs to the technical field of preparation of diamond-like carbon films. By designing a special splicing target with a copper-carbon ratio of 1: 3, and combining accurate adjustment of a sample relative to a target material placing position before film coating and gradient control of acetylene introduction flow in a DLC film preparation stage, the copper-doped DLC film is prepared; a multi-dimensional synergistic copper doping content regulation and control mechanism is formed, the copper doping content can be flexibly, accurately and repeatedly adjusted within the range of 2.5 at%-9.1 at%, the problem of target poisoning easily caused by introduction of precursor gas such as acetylene when metal-doped DLC is prepared through a traditional magnetron sputtering technology is effectively solved, and the metal-doped DLC prepared through the magnetron sputtering technology is high in yield and good in stability. Meanwhile, the technical defects that in the process of preparing the DLC through pure carbon target sputtering, the hydrogen content of the film is too low, and the film cannot adapt to the nitrogen working condition are overcome, the prepared copper-doped DLC film is a-C: H type, the hydrogen content meets the nitrogen environment use requirement, and the copper-doped DLC film can be well applied to the friction lubrication scene under the nitrogen working condition.

The invention provides a laser three-dimensional forming preparation method for preparing a gradient reinforced composite material turbine blade of a gas turbine. The method comprises the following steps: ball-milling and mixing nickel-based alloy, nano silicon carbide and boron carbide powder according to a mass ratio of (92-96): (2-4): (2-4); a laser three-dimensional forming technology is adopted, a three-section gradient structure of a non-strengthening area (pure nickel base alloy), a transition area (gradient mixing) and a strengthening area (composite material) is constructed in the root-tip direction of the blade through a two-way powder feeding system, and near-net forming of the functional gradient strengthening turbine blade with the ceramic strengthening phase strengthening at the tip end of the blade and the root part maintaining toughness is achieved. The prepared turbine blade of the gas turbine has excellent high-temperature creep resistance, fatigue resistance, corrosion resistance and wear resistance, works for a long time in severe environments such as high temperature, high pressure, wear and corrosive media, has excellent high-temperature creep damage resistance, low-cycle fatigue damage resistance, corrosion damage resistance and friction damage resistance, and can effectively prolong the service life of the gas turbine.

The present invention provides a composite fisheye anti-skid plate for complex pavement in multiple scenarios and a preparation method thereof, and relates to the technical field of anti-skid plates. The composite fisheye anti-skid plate for complex pavement in multiple scenarios of the present invention comprises a metal substrate layer and a rubber anti-skid substrate; wherein the metal substrate layer is tightly bonded to the rubber anti-skid substrate by an adhesive; and the metal substrate layer is evenly distributed with fisheye-shaped convex holes. The composite fisheye anti-skid plate for complex pavement in multiple scenarios of the present invention has good anti-skid ability, anti-deformation ability, static bending strength and corrosion resistance, and can be applied to industrial plants, production workshops, corridors in public places, and can also be used as anti-skid paving slabs in places with poor terrain such as deserts, swamps, and coal mine tunnels. The composite fisheye anti-skid plate for complex pavement in multiple scenarios provided by the present invention can realize the rapid paving of temporary pavement in complex scenarios, protect the safety of vehicles driving on temporary paved pavement, and has low cost, light weight, easy to carry, and can be reused many times.

The present invention relates to the technical field of tire intelligent design, and in particular to a method, application, device, medium and computer program for calculating eccentric wear parameters of a tire based on ground contact pressure distribution. The method includes obtaining a ground contact pressure distribution diagram of the tire, analyzing the ground contact pressure distribution diagram of the tire, defining and calculating a series of parameters and defining and calculating an eccentric wear parameter β; the method only needs to provide the ground contact pressure distribution of the tire during use, and the degree of eccentric wear of the tire can be predicted according to the ground contact pressure distribution.

The invention discloses a rubber composite material, a rubber compound and a preparation method thereof, and the method comprises the following steps: (1) modifying carbon black by using a coupling agent to obtain carbon black slurry; (2) mixing the carbon black slurry and natural latex to obtain a natural latex / carbon black mixed solution; and (3) flocculating the natural latex / carbon black mixed solution, filtering, and drying to obtain the rubber composite material. The rubber composite material prepared by the method disclosed by the invention has higher wear resistance, and the heat generation and rolling resistance of rubber are reduced.

The present invention provides a steel for passenger locomotive wheels suitable for use in high-cold areas, a production method, a wheel and a production method, the composition of which is as follows: C: 0.44-0.54%, Si: 0.40-0.65%, Mn: 0.80-1.2%, Cr: 0.15-0.30%, V: 0.08-0.15%, Al: 0.008-0.015%, P: 0.005-0.010%, S: 0.006-0.015%; TO: ≤10ppm, [H]: ≤1.5ppm, [N]: 50-80ppm, and the rest is Fe and unavoidable impurity elements. By designing a matching production process and heat treatment method, the produced wheel has more excellent rolling contact fatigue resistance and wear resistance, thereby reducing the phenomenon of anti-peeling and falling off, and further improving the service stability of the wheel throughout its life cycle.

The utility model discloses a box stacking robot which comprises a bearing plate, the inner wall of the bearing plate is connected with a push plate in a sliding mode, and an air cylinder is installed on the outer surface of the bearing plate. Through cooperation of a servo motor, a clamping plate, a buffer plate, an air cylinder and a push plate, when the clamping plate is slightly loosened, the gravity of a box body is smaller than the friction force between the box body and the buffer plate, when the box body moves to a box body pile, the lower side face of the box body is attached to other box bodies, then the clamping plate is loosened, the air cylinder can push the push plate, and the box body is clamped on the box body pile. The push plate can move downwards to push the box body to move downwards so as to be separated from the clamping of the buffer plate, so that the box body can be attached to the outer side of other box bodies and naturally and slowly fall, and the clamping plate is not inserted between the box bodies, so that the width of a gap between the box bodies can be greatly reduced to be close to zero; therefore, the stacked box bodies are tightly attached to one another, and the problem that due to gaps, when the box bodies are stacked to a certain height, the box bodies are prone to collapsing is solved.

The utility model discloses a kind of oil cylinders with protective structure, including oil cylinder main body, mobile piston, piston rod and cylinder cover, the outer end fixed mounting of oil cylinder main body has protective sleeve, the inner wall fixed mounting of oil cylinder main body has heat insulating layer;The lower positioning piece is fixedly installed on the upper end of the oil cylinder main body, the fastening ring is threadedly connected with the outer curved surface of the lower end of the lower positioning ring, the flexible bellow is extruded and adhered to the lower end of the fastening ring, the upper positioning piece is fixedly installed on the outer curved surface of the upper end of the piston rod, the positioning column is fixedly installed on the upper end of the upper positioning piece, the clamping piece is movably connected with the outer curved surface of the positioning column, the limiting ring is fixedly installed on the upper end of the positioning column, the supporting spring is fixedly installed on the lower end of the limiting ring, the flexible bellow upper end inside extrusion is adhered between the clamping piece and the upper positioning piece.The utility model greatly improves the protection performance of oil cylinder main body, prolongs the service life of oil cylinder main body.

The utility model relates to agricultural machinery material blocking accessory technical field, concretely is a straw pulverizer feed inlet material blocking device, including pulverizer and transmission structure, still include having discharge gate and feed inlet, the outer wall of feed inlet is fixedly connected with material blocking unit, material blocking unit includes support frame, material blocking subassembly and adjusting assembly, material blocking subassembly is used for the initiative adjustment of feed inlet angle size, adjusting assembly is used for the fixed and buffer of feed inlet in work, this straw pulverizer feed inlet material blocking device, the device passes through the material blocking subassembly and adjusting assembly of turnover, according to the dynamic adjustment of straw thickness material blocking angle and retreat amplitude, thick straw is not easy to open material blocking board leakage, thin straw is not easy to jam, make the device when carrying out the pulverization of different size straw, the pulverization effect is better, increases its stability, reduces its failure rate, increases its service life, is suitable for long -term stable material blocking operation.

The invention relates to the technical field of tire rubber mixing, and discloses a mixing method of a high-wear-resistance and low-heat-generation rubber composition, which comprises the following steps of: separately mixing high-molecular-weight natural rubber or butadiene styrene rubber / carbon black mixed high-temperature field and butadiene rubber / white carbon black / silane coupling agent mixed low-temperature field; the technical difficulty of blending rubber compositions with different temperature field requirements is effectively solved; meanwhile, the Mooney viscosity of the rubber composition can be greatly reduced by utilizing the high shearing capacity of the screw, and the segregation problem of the filler in different rubbers is improved; for the rubber composition without the addition of filling oil, the mixing method can further improve the abrasion performance of the rubber composition; in addition, VOC emission in the rubber composition processing process is effectively reduced through collection and treatment of VOC in the mixing process.

The utility model relates to the technical field of machining, in particular to a machining polishing device which comprises a fixing seat, clamping bodies used for clamping mechanical parts are symmetrically arranged on the fixing seat, motors are arranged on the clamping bodies, telescopic rods are arranged on the motors, polishing discs used for polishing the mechanical parts are arranged on the telescopic rods, and the polishing discs are arranged on the fixing seat. And a driving roller for moving the clamping body is arranged on the fixed support. Through the arrangement of the transmission rollers and the conveying belt, the clamping bodies can clamp the mechanical parts according to the specifications of the mechanical parts, meanwhile, the surfaces of the clamping bodies are in an arc shape, loss of the surfaces of the mechanical parts can be reduced, and the fixing effect of the mechanical parts during polishing can be effectively improved through the anti-skid rubber strips; the situation that the polishing operation efficiency of the mechanical parts is reduced due to the displacement phenomenon generated after the polishing disc makes contact with the mechanical parts is avoided, splashing of disintegrating slag can be effectively reduced through the clamping body, the disintegrating slag directly falls into the clamping body, and later unified collection is facilitated.